<template>
  <div class="app-container">
    <el-form label-width="120px">
      <el-form-item label="讲师名称">
        <el-input v-model="teacher.name" />
      </el-form-item>
      <el-form-item label="讲师排序">
        <el-input-number v-model="teacher.sort" controls-position="right" :min="0" />
      </el-form-item>
      <el-form-item label="讲师头衔">
        <el-select v-model="teacher.level" clearable placeholder="请选择">
          <el-option :value="1" label="高级讲师" />
          <el-option :value="2" label="首席讲师" />
        </el-select>
      </el-form-item>
      <el-form-item label="讲师资历">
        <el-input v-model="teacher.career" />
      </el-form-item>
      <el-form-item label="讲师简介">
        <el-input v-model="teacher.intro" :rows="10" type="textarea" />
      </el-form-item>

      <!-- 讲师头像：TODO -->
      <!-- 讲师头像 -->
      <el-form-item label="讲师头像">
        <pan-thumb :image="teacher.avatar" />
        <el-button type="primary" icon="el-icon-upload" @click="imagecropperShow = true">更换头像
        </el-button>
        <image-cropper v-show="imagecropperShow" :width="300" :height="300" :key="imagecropperKey"
          :url="BASE_API + '/eduoss/upload'" field="file" @close="close" @crop-upload-success="cropSuccess" />
      </el-form-item>

      <el-form-item>
        <el-button :disabled="saveBtnDisabled" type="primary" @click="saveOrUpdate">保存</el-button>
      </el-form-item>
    </el-form>
  </div>
</template>
<script>
import teacher from '@/api/teacher/index'
import ImageCropper from '@/components/ImageCropper'
import PanThumb from '@/components/PanThumb'

export default {
  name: 'AddTeacher',
  components: { PanThumb, ImageCropper },
  data() {
    return {
      teacher: {},
      saveBtnDisabled: false,
      imagecropperShow: false,
      imagecropperkey: 0,
      BASE_API: process.env.BASE_API
    }
  },
  created() {
    this.init();
  },
  watch: {
    $route(to, from) {
      this.init();
    }
  },
  methods: {
    init() {
      if (this.$route.params && this.$route.params.id) {
        const id = this.$route.params.id;
        this.getTeacher(id);
      } else {
        this.teacher = {}
      }
    },
    saveOrUpdate() {
      this.saveBtnDisabled = true;
      if (!this.teacher.id) {
        this.saveTeacher();
      } else {
        this.updateTeacher();
      }
    },
    updateTeacher() {
      teacher.updateTeacherInfo(this.teacher).then(response => {
        return this.$message({
          type: 'success',
          message: '修改成功!'
        })
      }).then(resposne => {
        this.$router.push({ path: '/teacher/list' })
      }).catch((response) => {
        this.$message({
          type: 'error',
          message: '修改失败'
        })
      })
    },
    getTeacher(id) {
      teacher.getTeacherInfo(id).then(response => {
        this.teacher = response.data.item;
      })
    },
    saveTeacher() {
      teacher.addTeacher(this.teacher).then(response => {
        return this.$message({
          type: 'success',
          message: '保存成功!'
        })
      }).then(resposne => {
        this.$router.push({ path: '/teacher/list' })
      }).catch((response) => {
        this.$message({
          type: 'error',
          message: '保存失败'
        })
      })
    },
    cropSuccess(data) {
      console.log(data)
      this.imagecropperShow = false
      this.teacher.avatar = data.url
      // 上传成功后，重新打开上传组件时初始化组件，否则显示上一次的上传结果
      this.imagecropperKey = this.imagecropperKey + 1
    },
    // 关闭上传组件
    close() {
      this.imagecropperShow = false
      // 上传失败后，重新打开上传组件时初始化组件，否则显示上一次的上传结果
      this.imagecropperKey = this.imagecropperKey + 1
    }
  }
};
</script>
<style lang='' scoped>
</style>